Columbia Basin Performance Measures

PIT Tag Exposure Results

graph

PIT-Tagged Wild Summer Steelhead Query Parameters
Year2024
ProjectBonneville
River ParameterTemperature Tailrace
Critical Temperature Tailrace Value15 C
Calculate ExposureAbove Critical Value
River Parameter Data FillNo
Query Dates1/1 - 12/31
Total Run Period (Mar 20 - Jul 4)
Total Number of Fish Observed2204
Percent of Total Run Analyzed [Number Observed]99.77 % [2199]1
Temperature Tailrace Exposure Index13.69 C
Percent of Fish Exposed [Number Exposed]13 % [288]
Number of Days Fish Exposed25
Middle 80% of Run Period (Apr 29 - Jun 6)
Number of Fish Observed1807
Percent of Middle 80% of Run Analyzed [Number Observed]100 % [1807]
Temperature Tailrace Exposure Index13.7 C
Percent of Fish Exposed [Number Exposed]4.8 % [88]
Number of Days Fish Exposed3
Middle 50% of Run Period (May 8 - May 24)
Number of Fish Observed1134
Percent of Middle 50% of Run Analyzed [Number Observed]100 % [1134]
Temperature Tailrace Exposure Index13.94 C
Percent of Fish Exposed [Number Exposed]0 % [0]
Number of Days Fish Exposed0
Run Dates
First Day of RunMar 20
5% of Run passedApr 25
10% of Run passedApr 29
50% of Run passedMay 18
90% of Run passedJun 6
95% of Run passedJun 10
Last Day of RunJul 4
Date(s) When Temperature Tailrace Crosses 15 C
Jun 1, Jun 3, Jun 6

1. Total Run Analyzed [2199] is less than total observed during the period [2204]. Only fish observed on days with River Parameter data are analyzed.